Have you tried pressing M or checking if you have sound muted in settings? You might’ve pressed M by accident which mutes game sound (it might be a different key for you depending on if you changed input settings or have default binds). If that doesn’t work then enable Debug Console in game settings in system tab at the bottom and open it in the game with ~
key (default, can also be different depending on your input settings). If you can see audio channels being created and audio clips being played on them (shown in runtime info in top left corner) and no errors in console log - check if maybe you muted game application in system mixer. And if there are errors in console log related to missing assets - check if your antivirus didn’t quarantine asset bundles for some reason.